Age and growth of school mackerel (Scomberomorus queenslandicus) and spotted mackerel (S. munroi) in Queensland east-coast waters with implications for stock structure
| Autor: | Michelle J. Sellin, Gavin A. Begg |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
education.field_of_study
Stock assessment Ecology biology Scombridae Population Mackerel Scomberomorus queenslandicus Scomberomorus munroi Aquatic Science Oceanography biology.organism_classification Fishery medicine.anatomical_structure medicine Fisheries management education Ecology Evolution Behavior and Systematics Otolith |
| Zdroj: | Marine and Freshwater Research. 49:109 |
| ISSN: | 1323-1650 |
| DOI: | 10.1071/mf97057 |
| Popis: | Age and growth of school mackerel (Scomberomorus queenslandicus) and spotted mackerel (S. munroi) in east-coast waters, Queensland, Australia (16˚S to 28˚S), were determined to provide population parameters required for stock assessment and fisheries management. Female school mackerel (L∞ = 651 mm, K = 0.59, t0 = –1.41) were estimated to grow to a greater asymptotic length, but at a slower rate, than males (L∞ = 628 mm, K = 0.71, t0 = –1.26). Growth patterns of school mackerel differed between geographic regions and suggested the existence of separate stocks throughout the east-coast distribution. In contrast, female spotted mackerel (L∞ = 849 mm, K = 0.46, t0 = –1.54) were estimated to reach a greater asymptotic length at a faster rate than males (L∞ = 768 mm, K = 0.23, t0 = –4.33). There was no difference in growth between spotted mackerel from different regions, suggesting that there is a single stock along the Queensland east coast. Identification of school and spotted mackerel populations in Queensland east-coast waters will enable the species to be managed on the basis of stock structure across this range. |
| Databáze: | OpenAIRE |
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